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农村一次典型雷击事件的灾害调查与研究

福建建筑 2017年第10期 104-107页

作者：李衣长龚伟张泉锋陈连新巫圣灿福建省三明市气象局福建三明365000

针对农民防雷安全意识淡薄,农村防雷设施建设薄弱,雷电灾害频繁造成农村人员伤亡和财产损失事件,为提高农村农民自建房的雷电灾害防御能力,对农村一次典型雷击事件的灾害调查,分析受灾点所在农村的雷电活动情况,对雷击受灾点进行现场勘... 详细信息

针对农民防雷安全意识淡薄,农村防雷设施建设薄弱,雷电灾害频繁造成农村人员伤亡和财产损失事件,为提高农村农民自建房的雷电灾害防御能力,对农村一次典型雷击事件的灾害调查,分析受灾点所在农村的雷电活动情况,对雷击受灾点进行现场勘察、测量、分析。其次,通过统计学分析法、灾情解析法和层次分析法,找出雷击路径和引发雷击的原因,提出农村自建房应充分利用建筑本身结构钢筋因地制宜地设计防雷措施,以有效防护直击雷、闪电电涌侵入和闪电感应危害,经济合理地安装雷电防护措施,增强农村雷电灾害防御能力,避免或减少农村雷击灾害事件的发生。

关键词：雷击事件灾害调查雷电防护

Enhanced permeation performance of polyether-polyamide block copolymer membranes through incorporating ZIF-8 nanocrystals

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Chinese Journal of Chemical Engineering 2017年第7期25卷 882-891页

作者： Longwei Xu Long Xiang Chongqing Wang Jian Yu Lixiong zhang yichang Pan State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 210009China

Membrane-based CO_2 separation is a promising alternative in terms of energy and environmental issues to other conventional techniques. Polyether-polyamide block copolymer(Pebax) membranes are promising for CO_2 separation because of their excellent selectivity, but limited by their moderate gas permeability. In this study,fresh-prepared zeolitic imidazolate framework-8(ZIF-8) nanocrystals were integrated into the Pebax?1657matrices to form mixed matrix membranes. The resulting membrane exhibits significantly improved CO_2permeability(as high as 300% increase), without the sacrifice of the selectivity, to the pristine polymer membrane. Several physical characterization techniques were employed to confirm the good interfacial interaction between ZIF-8 fillers and Pebax matrices. The effect of added ZIF-8 fillers on the transport mechanism through MMMs is also explored. Mixed-gas permeation for both CO_2/N_2 and CO_2/CH_4 was also evaluated. The separation performance for CO_2/CH_4 mixtures on the ZIF-8/Pebax MMMs is very close to the Roberson upper bound, and thus is technologically attractive for purification of natural gas.

关键词： Membrane Separation Carbon dioxide Mixed matrix membrane Metal-organic framework

帕瑞昔布钠与地佐辛超前镇痛对乳腺癌根治术患者心血管反应及术后镇痛的影响

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现代肿瘤医学 2013年第6期21卷 1347-1350页

作者：李小刚周荣胜王瑞马正敏张义长西安交通大学医学院第一附属医院麻醉科陕西西安710061

目的:比较帕瑞昔布钠和地佐辛超前镇痛对乳腺癌根治术患者心血管反应及术后镇痛的影响。方法:择期将全麻下行单侧乳腺癌根治术的患者90例,ASA分级I-Ⅱ级,随机分为三组:P组(帕瑞昔布钠组)、D组(地佐辛组)和S组(生理盐水组即对照组),每组3... 详细信息

目的:比较帕瑞昔布钠和地佐辛超前镇痛对乳腺癌根治术患者心血管反应及术后镇痛的影响。方法:择期将全麻下行单侧乳腺癌根治术的患者90例,ASA分级I-Ⅱ级,随机分为三组:P组(帕瑞昔布钠组)、D组(地佐辛组)和S组(生理盐水组即对照组),每组30例。三组均采用丙泊酚和瑞芬太尼静脉麻醉,在诱导前15min,P组和D组分别给予帕瑞昔布钠40mg、地佐辛5mg静脉注射作为超前镇痛,S组则给予等量(5ml)生理盐水;术后均采用芬太尼静脉自控镇痛(PCIA)。记录三组患者入室安静后(T1)、麻醉诱导入睡后(T2)、插管后即刻(T3)、切皮后(T4)、手术结束时(T5)、拔除气管导管后即刻(T6)的平均动脉压(MAP)和心率(HR),记录术中丙泊酚和瑞芬太尼的用量,患者恢复情况及术后3h、6h、12h、24h和48h的疼痛视觉模拟评分(VAS),PCIA泵试图按压次数、有效按压次数,观察术后不良反应。结果:三组患者T3、T6时刻MAP和HR都明显升高,P组升幅最小,与S组和D组比较差异有统计学意义(P0.05);P组术后VAS评分明显低于D组和S组(P<0.05);P组术后3h、6h、12hPCIA泵试图按压次数明显少于D组(P<0.05)。结论:帕瑞昔布钠与地佐辛超前镇痛都能有效抑制手术和插管刺激诱发的心血管反应,减轻术后疼痛,但帕瑞昔布钠的作用强于地佐辛。

关键词：帕瑞昔布钠地佐辛超前镇痛乳腺癌根治术心血管反应术后镇痛

A molecular brake that modulates spliceosome pausing at detained introns contributes to neurodegeneration

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Protein & Cell 2023年第5期14卷 318-336页

作者： Dawei Meng Qian Zheng Xue zhang Xuejiao Piao Li Luo yichang Jia Tsinghua-Peking Joint Center for Life Sciences Tsinghua UniversityBeijing 100084China School of Life Sciences Tsinghua UniversityBeijing 100084China School of Medicine Tsinghua UniversityBeijing 100084China IDG/McGovern Institute for Brain Research Tsinghua UniversityBeijing 100084China Tsinghua Laboratory of Brain and Intelligence Tsinghua UniversityBeijing 100084China

Emerging evidence suggests that intron-detaining transcripts(IDTs)are a nucleus-detained and polyadenylated mRNA pool for cell to quickly and effectively respond to environmental stimuli and ***,the underlying mechanisms of detained intron(DI)splicing are still largely ***,we suggest that post-transcriptional DI splicing is paused at the Bact state,an active spliceosome but not catalytically primed,which depends on Smad Nuclear Interacting Protein 1(SNIP1)and RNPS1(a serine-rich RNA binding protein)***1 and Bact components preferentially dock at DIs and the RNPS1 docking is sufficient to trigger spliceosome *** of Snip1 attenuates neurodegeneration and globally rescues IDT accumulation caused by a previously reported mutant U2 snRNA,a basal spliceosomal ***1 conditional knockout in the cerebellum decreases DI splicing efficiency and causes ***,we suggest that SNIP1 and RNPS1 form a molecular brake to promote spliceosome pausing,and that its misregulation contributes to neurodegeneration.

关键词： SNIP1 RNPS1 spliceosome detained intron neurodegeneration

Adaptable "bubble particles" prepared by green aqueous phase reshaping for completely removing odor

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Nano Research 2024年第3期17卷 2172-2180页

作者： Jiajia Ma yichang Xia Tienan Zhao Wenfeng Hu Weifeng zhang Qinfei Ke Yi Zhao Shanghai Frontiers Science Center of Advanced Textiles Donghua UniversityShanghai 201620China Engineering Research Center of Technical Textiles Ministry of EducationDonghua UniversityShanghai 201620China School of Fashion Engineering Central Laboratory Shanghai University of Engineering ScienceShanghai 201620China Department of Materials Science and Engineering National University of SingaporeSingapore 117575Singapore School of Perfume and Aroma Technology Shanghai Institute of TechnologyShanghai 201418China

Facile and ecofriendly loading of micro/nano function-specific substances to create functional materials is a trend being pursued by ***,current micro/nano particles loading approaches are often hindered by issues such as uneven distribution,unsatisfactory stability and complicate *** this work,we present an aqueous phase reshaping method that only utilizes the moisture to fabricate the"bubble particles",which could perfectly cater to the topography of the *** green preparation of bubble particles adopts an absolutely zero-pollution method,realizing the firm loading of particles on the *** the preparation and loading of particles overcomes the traditional complicate process,while the aqueous phase reshaping ensures uniform and firm loading of the"bubble particles"onto the *** mechanism demonstrates a significant enhancement in the interface relation after aqueous phase reshaping,with a 121-fold increase in contact surface area achieved by reducing the height by 1μ***,we explore for the first time the influence of the nature of the receiving substrate on the interface morphology of particles during electrostatic spraying,which has important guiding significance for the interface relationship of electrostatic spraying and even electrostatic spinning *** also screen out the natural antibacterial essential oil linalool as the effective specialized antibacterial agent,which can specifically inhibit the odor-producing Proteus in urine,with an antibacterial rate of up to 100%.Taken together,this simple,ecofriendly method for fabricating functional materials with optimal interface stability appears highly promising for use in various products formed by electrostatic spraying/spinning.

关键词： bubble particle electrostatic spraying aqueous phase reshaping interface bonding remove odor nano spraying

Hydrogen and Oxygen Isotope Study on the Water-Rock Interaction of the Yinshan (Cu-) Pb-Zn-Ag Ore Deposit, Jiangxi Province

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Acta Geologica Sinica(English Edition) 1996年第3期70卷 274-289页

作者： zhang Ligang, Liu Jingxiu, Yu Guixiang and Chen Zhensheng yichang Institute of Geology and Mineral Resources, CAGS, yichang, Hubei Jiang Minxi Y ichang Institute of Geology and Mineral Resources CAGS Yichang Hubei

The δ18O values of vein quartz of different stages from the Yinshan ore deposit are constant around 16‰ and the calculated δ18OH2O values attain 8‰± ; the δDH2O values of fluid inclu-sions in vein quartz are constant at about-60‰. From the surface down to 1200 m below the δ18O values of altered rocks gradually decrease from 15‰± to 11‰± . Various water-rock inversion calculations indicate that the ore fluids were formed by the interaction between meteoric water and phyllite at 350℃ and the effective W/ R value of around 0.1. When the water-rock exchange in the upper mineralization system took place, the effective W / R value increased to 5.0 or more. As a result, an evolution and mineralization model of a buffered open system with two-stage water-rock interactions is proposed in this study.

关键词： H and O isotopes water-rock exchange buffered open system Yinshan of Jiangxi Province

2,4-二氯苯基荧光酮与镓显色反应的研究及其应用

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黄淮学刊（自然科学版） 1997年第2期13卷 58-61页

作者：黄应平张华山黎心懿湖北三峡学院师范学院化学系宜昌443000 武汉大学化学系湖北武汉430072

详细研究了在淡化十六烷基三甲铵（CTMAB）存在下，镓与2，4-二氯苯基荧光酮和F-的显色反应条件和光度性质，在PH6．0的HAc－NaAc缓冲介质中，Ga与试剂形成1：2的配合物，最大吸收峰位于568nm处，表现摩尔吸光系数ε为1．78×105L·mol... 详细信息

详细研究了在淡化十六烷基三甲铵（CTMAB）存在下，镓与2，4-二氯苯基荧光酮和F-的显色反应条件和光度性质，在PH6．0的HAc－NaAc缓冲介质中，Ga与试剂形成1：2的配合物，最大吸收峰位于568nm处，表现摩尔吸光系数ε为1．78×105L·mol－1cm－***含量在0～5μg／25ml范围内符合比尔定律，拟定方法用于地质样品中线的测定，结果满意．

关键词：镓二氯苯基荧光酮分光光度法显色反应

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中药九香虫混淆品的调查及鉴定

中国中医药信息杂志 2019年第1期26卷 13-17页

作者：李娟李莎张一唱马晓晶陈科力黄璐琦中国中医科学院博士后科研流动站北京100700 中国中医科学院中药资源中心北京100700 湖北中医药大学湖北武汉430065

目的调查中药九香虫的混淆品,并进行品种鉴定。方法通过对药材市场和主要产地调查,利用昆虫分类学方法进行品种鉴定,比较不同品种间的原动物和药材的形态学差异。结果累计调查并鉴定九香虫常见混淆品8种,均为性状相似的蝽科昆虫,并列出... 详细信息

目的调查中药九香虫的混淆品,并进行品种鉴定。方法通过对药材市场和主要产地调查,利用昆虫分类学方法进行品种鉴定,比较不同品种间的原动物和药材的形态学差异。结果累计调查并鉴定九香虫常见混淆品8种,均为性状相似的蝽科昆虫,并列出了鉴定检索表,总结其与九香虫的性状主要区别点。结论蝽类昆虫品种繁多,性状相似,常混作中药九香虫用,使用时应注意鉴别。

关键词：九香虫混淆品品种鉴定

Capacity degradation analysis and knee point prediction for lithium-ion batteries

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Green Energy and Intelligent Transportation 2024年第5期3卷 13-22页

作者： Teng Wang Yuhao Zhu Wenyuan Zhao yichang Gong Zhen zhang Wei Gao Yunlong Shang Shandong University Jinan250061China San Diego State University San DiegoUSA

Analyzing capacity degradation characteristics and accurately predicting the knee point of capacity are crucial for the safety management of lithium-ion batteries(LIBs).However,the degradation mechanism of LIBs is complex.A key but challenging problem is how to clarify the degradation mechanism and predict the knee *** to the external characteristics such as capacity decline gradievnt and the peak value of increment capacity curve(IC curve),the capacity degradation can be divided into four stages,including initial decline stage,slow decline stage,transition stage and high-speed decline *** degradation mechanism of LIBs is compared from the longitudinal and horizontal aspects,*** them,the battery usage from the initial stage to the end of life(EOL)is longitudinal *** battery under different conditions,such as charging and discharging,different discharge rate,different cathode material degradation mechanism is horizontal ***,a method based on neural network is proposed to predict the knee *** features are used to predict the capacity and cycle of the knee point,which are the gradient of the capacity degradation curve and the difference of the IC curve with the maximum *** experimental results show that a two-dimensional surface can be obtained using only the first 100 cycles,which can provide a reference for the position of the knee point accurately prediction.

关键词： Lithium-ion batteries Multistage capacity degradation Knee point prediction Neural network